Tirukkural 421: Fortress of Wisdom

Wisdom is a weapon to ward off destruction; it is an inner fortress which enemies cannot destroy.

Image of Satguru Sivaya Subramuniyaswami
If you do not understand your reaction to something, wait until it subsides emotionally, so you will not be upset, then try to understand it by writing about it in a quiet moment. Then burn the paper in an inauspicious fire, such as in a garbage can.
—Gurudeva